Redirecting request based on port number

If you JUST want to match the port number, then you can do that using the TCP::local_port command:

when HTTP_REQUEST {
   switch [TCP::local_port] {
     "8088" { pool Stagin_Pool }
     "8089" { pool Management_Pool }
     "8090" { pool Development_Pool }
     "8091" { pool Test_Lab_Pool }
     default { pool Production_Pool }
   }
}

If you need to match the whole request (host, port, and uri) then you'd need something like this:

"[string tolower [HTTP::host]]:[TCP::local_port][string tolower [HTTP::uri]]"

This won't capture the protocol specifier (ex. "http://"), so you'll need to remove it from the evaluation. Considering that all of the hosts are the same, you can probably skip the [HTTP::host] evaluation as well. Also, if the port and URI are specific to a service (ex. 8088 and /tuesday), then you might also want to consider just evaluating one or the other.